UCase(string)
LCase(string)
StrConv(string, conversion)' Accomplishes the same thing as UCase and LCase with an added argument
' NOTE: "string" is any string expression
' "conversion" is a number or argument as follows:
vbUpperCase    1' Converts the given string to uppercase characters
vbLowerCase    2' Converts the given string to lowercase characters
vbProperCase    3' Converts the given string to proper case (first letter of each word capitalized)